Oil derrick



Nov. 29, 1927.

J. o. WILLIAMS OIL DERRICK Filed Sept- 21. 1926 2 Sheets-Sheet 1 JD. Milan-as Nov. 29; 1927, 1,650,857

J. D. WILLIAMS OIL manarcx Filed Sept 21, 1926 2 Sheets-Sheet 2 Fig"- E- gwuantoz J D. milieu/125 Patented Nov. 29, 1927.

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Application filedseptemher 21, 1926; Serial No; 136L853.

Thisinvention. relates to derricks such as are usedi i'n, the oil fields for drilling wells Ll'lCl. for like operations, and the. general: oh ject: of the invention, is to; provide means whereby'the. four legs or timbers of the d'er rickmay beheld, rigidly together by the gi'rts and corner angles and when. the braces are tightened;

A. further object is to.provide inside and outside corner angle irons adapted to embrace the sections ot the corner'tini'bers'when the angle irons are-in place and provide girts engaged with said; angleirons, theparts be ing so constructed; that as the braces are tightened,.the girts will also be tightened.

A stilljfurther object is to provide a den Set up, or readily taken down,

My invention is illustrated in theaccompanying drawings wherein Figure 1 is a side elevation oftheupper portion oi? an oil-dennick constructedin accordance with my invention;

Fig. 2 is a cross section on the line 22 of Figure 1; i v i Fig. 3 is a perspective view of the upper end of one of the timbers;

Fig. 4 is a perspective view, of one of the angle irons; it

Fig. 5 is a perspective view of the upper angle iron; 7

Fig. 6 is a perspective view of a girt. Referring to these drawings 10 designates the legs or corner timbers of the derrick which extend upward and inward toward the crown of the derrick and which may be made of wood, though other material may be used. These legs are formed of a plu rality of sections, the sections abutting against each other and the upper end of each section is formed with a diagonally disposed griiove 11 adapted to receive a diagonal b0 t.

Coacting with the sections of the derrick legs are the outer angle irons 12 and the inner angle irons 13. The outer angle irons engage against the outer faces of the rectangular sections 10 and extend beyond these sections as illustrated, while the inner angle irons engage against the inner faces and the flanges of each angle iron are less in width than the width of the corresponding faces of the derrick sections.

The angle irons 12 and 13 are formed with apertures 14 for the passage of the bolt 15, this bolt being disposed within the greeve trated in-Figure 2; rich ofthischaracter which may be readily 11 in the upper end' of the derrick section- 10. Eachflange 16 of the angleiron l2 is1provid' ed at" its upper and lower corners with-the apertures 17. for engagement with the brace rods 18 and also, with: an aperture 19 torren tgggement withthe bolt 20 which: passes rhug-hga gi'rtf21. The girt 21 isformed of an angle ironto provide, a downwardly depending flange anda horizontally depending flange mt it will be. noted from- Figure 6 that the vertical flange is extended beyond the" horizontal flange as at 22 so that this extension-.ofthe vertical flange is disposed betweenth-e angle iron12- and the two abuttlngl sections'lifi of the" derrick leg, as illuspThe vertical flange of each girt 21 is forirredwith. a: longitudinallyelon'gat'ed apertu'reor' slot 23" through which the bolt 20 passes-soxas'to' permit the gi'rt to shift longi tud'inally with relation to this-bolt 20- and withmelationtothelegs of the derriclr. The hracesIB-eX-t'end fromthe corner of oneangle iron 12 to the corner of the other angle iron 12 diagonally opposite eitherup or down and each brace is provided in its length with a turnbuckle 24 whereby the bracemay be tightened. I

It will be seen now that as the cross braces .18 are tightened, the angle irons 12 will be shifted towards each other a certain amount, thus drawing the legs of the derrick towards each other and that the slots 23 will permit this movement of the legs of the derrick and of the angle irons 12 without affecting the girts 21. When the braces have been fully tightened, however, the girts will bear against the angular wall of the angle irons 12 and no further inward movement of the legs of the derrick is possible but the tightening up of the turnbuckles 24.- will cause the various sections of the derrick to be held in rigid engagement with each other. The angleirons 12 and 13 at the upper end of the derrick legs are of the same form as the angle irons lower down except that there are two diagonally disposed bolts 15 extending through the upper ends of the uppermost leg sections instead of one bolt and obviously .upper ends of the uppermost leg sections and fits within the angular corner irons 12 in the manner illustrated in. Figure 1 and may be bolted thereto or otherwise engaged there with.

The bolt-s ZOare preferably provided with resilient washers which will elastically bear against the nuts and hold the nuts fromany tendency to work oii. lVhile I have hereto-' fore referred to the angle irons 12 and 13 as being of iron it will be understood that these will be made of steel or they may be made of any suitable material.

It will be seen that by my system of construction derricks may be constructed of any height by using a series of leg sections, splicing these sections to each other by means of the angle corner irons 12 and 13, placing the leg sections from each other by the girts which also act, of course, to prevent any spreading of the leg sections and drawing the angle irons towards each other and thus drawing the sections into rigid engagement with the girts by means of the cross brace rods with their turnbuckles. A derrick constructed in accordance with this invention is much cheaper than the ordinary derrick, may be more expeditiously handled and transported, and may be quickly putup or taken down. It will be seen that the angle iron corner pieces being attached as they are to the lowersection and projecting above this lower section, constitute sockets into which an upper section of a leg may be inserted and that each upper section is held in firm engagement with a lower section by the downward strain of the crossed braces. Obviously certain minor changes may be made in the details of construction and arrangement of parts without departing from the spirit of the invention as defined in the appended claim.

I claim v A derrick structure comprising alined beam sections abutting at their ends and provided at their end edges with diagonally disposed registering recesses, angle plates applied to the outer surfaces of the abutting ends of the beam sections and having edge portions projecting beyond the inner surfaces of the beam sections, angle plates applied to the inner surfaces of the abutting end portions of the beam sections and having edges spaced from the projecting edge portions of the first mentioned angle plate, bolts lying in said recesses and passing through said plates and disposed transversely of the beam sections, and girt bars secured to the proi'ecting end portions of the first mentioned p ates and having end extremities clamped b the bolts against the side surfaces of the lieam sections.

In testimony whereof I hereunto afiix my signature. I

JOHN D. WILLIAMS. 

